header{
    line-height: 44px;
    background-color: rgba(248, 248, 248, 100);
}
main{
   overflow: scroll;
   .jump{
        width: 105px;
        height: 40px;
        line-height: 40px;
        background: #fff;
        border-radius: 20px 20px 20px 20px;
        top:72px;
        right:15px;
   }
   .slogan{
        width: 100%;
        height: 64px;
        bottom: 164px;
        left: 0;
        line-height: 64px;
        color: #fff;
        font-size: 36px;
        font-weight: bold;
   }
}
.ad-bg{
     background: url("../../assets/imgs/advertisement-bg.jpg")center no-repeat;
    background-size: cover;
}